 AdoptUSKids presents What to Expect When You're Expecting A Teenager Learning the Lingo Today I'm going to help parents translate teen slang. Now, when a teen says something is on fleek, it's exactly like saying, that's rad. It simply means that something is awesome or cool. Another one is totes. It's exactly like saying, totally, just shorter. As in, I totes love going to the mall with Becca.